Seam for woven-wire belts



Patented Aug. 14, 1923.

HAIEIL'I'ON LINDSAY,

a a n w 5,,mWema OF CLEVELAND, GHIO, ASSIGNOBJ TO THE LINDSAY WIRE SEAR: FOR, VJOVEN VVIEE BELTS.

Application filed December 18, 1922. Serial No. 607,557.

To all whom it may concern:

Be it known that I, HAMILToN LINDSAY, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in a Seam for oven-lVire Belts, of which the following is-a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to a method of joining the endsof a wire fabric to form an; endless belt which is particularly useful.

in Fourdrinier paper machines. More particularly, my invention is concerned with a seam for lacing the ends of a belt have ing a special weave as set forth in my co pending application, Serial No- 525,403, filed Dec. 28, 1921.

Briefly, the belt illustrated in my copending application embodies a fabric wherein the lower knuckles of the long}.

tudinally extending or warp wires pass continuously beneath two or more cross or lay wires instead of only one. Accordingly, the warp wires are divided into groups, each preferably of three wires in number, during the weaving operation, and are manipulated so that one group forms one plane of the shed while the other two groups form the other plane of the shed, while the shuttle passes therebetween and across the loom.-

These groups are interchanged after each stroke of the shuttle whereby the fabric so side of the belt and long knuckles on the lower side thereof. This results in a core.

struction which gives a longer wearing surface to the under side of the belt, thus iii-- creasing the life thereof.

One of the difiiculties encountered in joining the ends of the belt above described is the provision of a seam which does not fill the interstices (which would render it difficult for water to pass through this scam when the belt is in use) and at the same time forms a su-flicient support between the formed has short knuckles on the upper sufficient space for the passage of water therethrough, and sufficient support between the ends of thefabric so that the pulp is'properly drained and at the same time supported adjacent the seam, whereby the paper is not weakened. Another object is the provision of aseam for use in a belt constructed in the manner above set forth which will not weaken the wires adjacent the ends of the fabric. Furthermore, my invention includes a scam, the wires of which lie in substantially the same plane as the warp wires so that the wear occasioned by the passage of the seam across a suction box is not greater than that occurring on other parts of the belt.

The preferred embodiment for carrying out my invention is illustrated in connection with the accompanying drawings, and

is hereinafter described in detail. The essential features are summarized in the claims.

bottom side thereof; Figs. 3 and 4- are views similar to Figs. 1 and 2 and show the application of a second stitching wire; Figs. 5 and 6 are views corresponding to Figs. 3 and i with the application of a closing" wire; while Figs. 7, 8, and 9 are sections taken on the corresponding lines in'Fig-s. 1, 3 and 5 respectively.

As shownin Figs. l-to 6, A indicates the longitudinal or warp wires of the fabric and B the transverse or lay wires. In Figs. 7 to 9, the foremost warp wire A passes over the transverse wire B thence beneath two transverse wires B and 13 over the wire B and thence beneath the next two transverse wires of which one only is shown snare ron wcvnnwran Burrs.

rinnrrt rou .nrnnsarr, 'o'r f -oLnvni3Ai\Tn,: onto; rissrenor. ro :trnnsarwnnvme cor/rrnnr, or cnnvntnnn, on o; a con-non wrnn eaten or onro.

hp'plicationifiled FebruarylZ, 192a. sci-m1 No. 818,751.

To all whom it mar concern;

1 Be it known that I, HAMILTONYLINVDSVAY,

a citizen of the 'United' States, residing at Cleveland, inthe county of Cuyahoga and State ofOhlo, have invented a certain new and useful Improvement in a Seam for lVoven-VireBelts, of which the following is a full,'clear, and exact description, reference being had to the'accompanying drawings. 7 V j w.

; This invention relates to a seam for joining the ends of-an endless wire belt which is useful in Fourdrinier paper machines.

My invention is -moreovenespecially concerned with a seam for lacing the ends ota belt having a special weave as set forth in my copendlng application-SerialNo. 525,- 403, filed December 28,1921."

Briefly, the belt illustrated in my: co-pend ing application embodies a fabric wherein the lower knuckles of the longitudinally extending or warp =wires pass continuously beneath two or more transverseor lay wres, instead of only one. Accordingly, the warp wires are divided intogroups, each preferably of three wires in number,during'the' weaving operation, and are so manipulated that one group forms one plane of the shed while the otheritwo groups. formithe other plane of the shed, during the passage of the shuttle therebetween and a'crossfthe loom. These groups are interchanged after each stroke of the shuttle whereby the fabric 7 so formed has short knuckles on the upper side of the beltand long knuckles on the I lower side thereof. This resultsin a construction which 'gives'a longer-wearing sur face to the under side of the belt, thus in creasing the life thereof.- 1 t One'of' the difficulties encountered in joining the ends ofthe belt abovedescribedis the provision of a'seam'which does not fill the interstices (which would render it difiicult for water to pass through this scam when "the belt is inuse) and at the same time forms a sufficient support between the'endsof the fabric so asnot to strain the pulp. Another difficulty is the arrangementof closing wires which do not displace the lay wires so as to distort the mesh.

Onef'of the'causes for the difficulties above set forth is the fact that the lay wireion each. end of the belt has usually heretoforebeen soldered to the ends of the warp wires. Usually some of the metal-fills the.interaffecting the quality of the normal passage mesh and accordingly paper formed at that particular point. One of the reasons ad vanced for the necessity of soldering-the end lay wire to the warp wires has been the distance between the short knuckles on such lay wire, which distance is considerably greater than that occurringin the standard weave. Accordingly, one of the objects of my in vention is the provision of a seam having sufficient space for the passage of water therethrough, and sufiicent support between the ends of the fabric so that the pulp is properly drained and atthe same time is supported adjacent the seam, whereby the paper is not weakened. 'Another object is the provision of a seam for use in a belt con structed inlthe manner above set forth which will not weaken the wire adjacent the ends of the fabric, and which may have suflicient strength to hold the cndsof the belt in proper position without requirin the lay wires adjacent the end of the belt to be soldered to the ends of the warp wires.

The preferred embodiment for carrying; out my invention is illustrated in connectioii with the accompanying drawings, and is hereinafter described in detail. The essential features are suminarzied in the claims.

In the drawings, Figure l is aview show-. ing a portio'n of the top of a belt having a weave constructed as heretofore described stices thus preventing of water throughthe' V and illustrating the application ofthe seam of the belt at BB BB etc. Thus the warp wirelk passes over thetransverse wire B", thence beneath the next two transverse wires B and and over the wire 13, thence beneath the next two transverse wires and B, etc. The next warp ire indicated at A? passes beneath the two transverse wires B and B ythence over the wire B thence beneath the next two transverse wires B and B The third warp wire AF, shown particularly. in Fig. 1, passes beneath the lay stitching Wires forming outer loops over the seme'lay wire and inner loops over different lay wires, all of the inner loops of one stitch: V

m iooos joining the ends or the belt.

the Weave comprises Warp Wires and lay wires, the Warp wires having long'lznuckles on one side of the belt and short knuckles on the other side thereo'lfl having two stitching Wires passing over one end of the belt so as to provide outer and inner loops, each inner loop being positioned on every third row and adjacent :1 short warp knuckle, and a. closing Wire passing across the ends of the L I i it seznn 'Ior an endless belt wherein belt and passing through the outer loops in one of the stitching wires.

12. A seznn for an endless belt wherein the Weave comprises warp Wires and lay Wires, the Warp Wl"(-3S having long knuckles ,on one side otthe belt and short knuckles on the other side thereof, having two stitching wires adjacent each end of the belt, each stitchingire forming outer loops over the end of tee belt and inner loopsover an inner lay wire and scent a short Warp knuckle, and a closing Wire passing alternately through the outer loops on each end of the belt.

In testimony whereof, I hereunto my signature.

HAMILTON LINDSAY.

l weave cornorises war wires and-la wires. l p 7 seam may be accomplished withoutsoldering or fusing the end lay wires with the severed ends of the warp wires.-

I claim j V 1; A seam for an endless belt wherein thethe warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires passing through the ends of the belt to form inner and outer loops, at least one of said stitching wires passing through the belt adjacent a short warp knuckle, the inner loops for said stitching wires being separated by at least one lay wire, and a closing wire connecting said outer loops.

2. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuokl es on the other side. thereof, having two stitching wires passing through the ends of the belt to form inner and outer loops, one of said stitching wires passing through the belt adjacent a short" warp knuckle,the outer loops passing over the same lay wire, and the inner loops passing over different lay wires at least one of the inner loops on one stitching'wirc being separated by at least one lay wire from an inner loop on the other stitching wire, and a closing wire passing through the outer loopsadjacent the ends of the belt.

3. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires on one end of the belt, each of said wires passing through the beltadjacent a short warp knuckle to form inner loops, at least one inner loop of one stitching wire be ing separated from at least one inner loop of the other stitching wire by a lay wire, and a closing wire associatedwith at least one of said stitching wires for adjoining the ends of the belt.

l. A seam for an endless belt wherein the weave comprises warp wiresand lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires adjacent one end of the belt, at least one of the stitching wires passing through the belt adjacent a short warp lmuckle, the stitching wires forming outer loops over the same lay wire and forming inner loops over different lay wires, said inner loops being. separated by at least one transverse row, and

a closing wire passing alternately through the outer loops for joining the ends of the belt. V

5. A seain for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires passing through one end of the belt to form inner and outer loops, the inner loops of one stitching wire occupying the same longitudinal row as the outer loops of the other stitching wire, one of said stitching wires passing over a lay wire which has a short warp knuckle adjacent said loop, and a closing wire passing through the outer loops for joining the ends of thebelt.

6. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires on the ends of the belt to form inner and outer loops, at least one of said stitching wires passing over a lay wire which has a short warp knuckle adjacent said inner loop, the inner loops of each stitching wire passing through the same longitudi nal row as the outer loops of the other stitching wire, and a closing wire passing through the outer loops for joining the ends of the belt.

'7. A seani for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires passing through one end of the belt to form inner and outer loops, and at least one of said stitching wires passing over a lay wire and between portions of short warp knuckles, the inner loops of one stitching wire occupying the same longitudinal row as the outer loops of the other stitching wire, and at least one of the loops of one wire being separated by a transverse row from at least one inner loop of the other wire, and a closing wire passing through the outer loops for joining the ends of the belt.

8. A seam foran endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on side of the belt and short knuckles on the other side thereof, having two stitching wires passing through one end of the belt to form inner and outer loops, at least one stitching wire passing through the belt adjacent a short warp knuckle, all of the inner loops of one stitching wire passing over the same lay wire and at least one inner loop of the other stitching wire being separated from all of the inner loops of the other stitching wire by at least one transverse row, and a closing wire passing through the outer loops of at least one stitching wire for joining the ends of the belt.

9. A seam for an endless belt wherein the weave comprises warp wires and lay wires, the warp wires having long knuckles on one side of the belt and short knuckles on the other side thereof, having two stitching wires passing over the inner and outer ends of thebelt to form inner and outer loops, at least one of the stitching Wires passlng over the end ing Wire passing over the third lay Wire remote from the end of the belt, and all of the inner loops 0'? the other stitching Wire passing over the fifth ley WlI'G remote from s end of the belt, and a closing Wire-passther s form in er and outer loops, one out said stitching wires passing); through the belt adjaeent it short Warp knuckle, all of said inner loops on each Wire passing over odd numbered lay Wires remote-from the end of the belt, and a closing Wire passing through the outer'loops for oiniog-the ends of the belt.

11. A seam for an the Weave comprises Wires, the Warp WllGS having", long knuckles on one side of the belt and short'knuckles on the other side thereof, having two stitehins Wires passing over the ends oi the belt to form inner and outer loops, one or said stitching Wires passing through the belt adendless l *t wherein warn W s and lay t the belt adjacent short Warp knuckle, all of the inner loops of one SlLliBCll in; through the outer loops for joining the Wires passing over the ends of the belt to jacent a short Warp knuckle, all of said inner loops on each Wire passing over odd numbered lay Wires remote tronithe end oi the belt, and the inner loop of each Wire passing through the same longitudinal ren asthe outerloop of the other wire, and closing Wire passing through the outer loops for joiningtheends of the belt.

12. A seam-for an endless belt wherein the Weave comprises Warp 'WllES and lay Wires, the Warp Wiresharing long, knue rles-on-one side of the belt and short knuckles on the othe" side thereof, baring trio stitching wires passing through the ends of the belt to {078111 inner and outer loops, at least one of the stitching Wires passing through the belt .adjaeent a short Warp knuckle, the outer loops passing over an end lay Wire, the innerloops of one stitching Wire passing over onelay Wire remote "from the end of the belt, and the inner loops of the other stitching Wire also passing over another Wire remote from the end of the belt, there being a t least one transverse row between the inner loopsof said Wires, and at least one transverse row between the inner loops of one wire and theeuter loops of both Wires, and a closing Wire passing: through the outer loops to join the ends otthe belt.

In testimony whereof-I hereunto .atlix my signature.

' HAMILTON LINDSAY. 

